Lubricator.



PATENTB1111B0-10, 19o?.

w. & J. W. LEYLAND.

LUBRICATOR.

APPLIcATIoN FILED 111111.23. 1907.

' Wm-ms.

Wal/@MMM um MM UNITED sTATEs lPATENT oEEioE. I

WILLIAM LEYLAND AND JOHN WM. LEYLAND, OF NEW YORK, N. Y.

To all whom it may concern.'

Be it known that we, WILLIAM LEYLAND, formerly a subject of Great Britain, having declared my intention of the United States, and JOHN WILLIAM LEYLAND, a citizen of the United States, both residing in the city of New York, borough of the Bronx, county and State of New York, have invented certain new and useful Improvements in Lubricators, of which the folowmg is a specification.

Our invention relates to the class of oil or other lubricant cups or receptacles in which the lubricant is displaced by water of. condensation resulting from live steam admitted to the receptacle through a channel which also serves as a means of discharge for the displaced lubricant, our present invention being an improvement upon that set forth in our concurrent application Serial N o. 305,204, iiled. March 10, 1906, and being designed to afford means for visually indicating the presence or absence of the lubricant within the receptacle. While applicable to the class of lubricators generally, it is like the structure set forth in our said concurrent application, especially adapted to lubricators to be used in connection with rock drills, hoisting engines, and the like, where the parts are subjected to rough usage.

The invention consists in the combination with a lubricator of the class designated, of

' ing a passage for the inlet of live steam, and

an observation or tell-tale glass especially arranged and incased as hereinafter described and claimed.

In the accompanying drawings, Figure 1, is a side elevation of our improved lubricator; Fig. 2, a top view of the. same Fig. 3, a sectional elevation upon plane of line 3 3 Fig. 2; Fi 4, a sectional view upon an enlarged sca e, of the tell-tale or sight glass taken at right angles to the section shown in Fig. 3. l

trlhe body of the oil receptacle or reservoir A, is preferably made in one piece,-the top,

bottom, sides and external protrusions for connections bein cast integral, as will be understood by reference to Fi s. l and 3, of the drawings, by which it wil be seen that the passage or conduit a, is formed directly within the base and side wall of said reservoir,-said conduit a, constituting and affordthe outlet, simultaneously, of the oil tothe parts to be lubricated as in other lubricators of this class. v The conduit a, extends to near Specification of Letters Patent.

Application filed March 28. 1907. Serial No. 364.978.

of becoming a citizen"I Patented Dec. 10, 1907.

the top of the reservoir A, where it emerges through a valve seat a', into a valve chamber having a lateral port a2, communicating with ing its axial rotation to regulate the position of the valve o, with relation to its seat a. In the drawings the upper end of the valve stem is shown as of square form in cross section for engagement with a wrench or key, but any v other Well known mechanical/expedient may be resorted to to effect the adjustment of the valve stem. We have herein shown a simple form of valve and stem, for which however may be substituted that shown and described in our concurrent application for patent herenbefore mentioned, or any other form which may be found most expedient.

E, is a screw plug for closing the opening through which the oil or other lubricant is supplied to the reservoir A; and d, is a drain passage closed by the screw plug or valve D. The drain passage d, opens through the bottom of the reservoir, which bottom is preferably made concave in form to facilitate the discharge of the water of condensation. While a separate plug may be used for the purpose, we prefer to utilize this plug E as a convenient means of applying our tell-tale or observation glass G, to the receptacle A. To this end we form said plug with an extension e, within which and the body of the plug is a bore e', of sufficient diameter to receive the observation glass G, which i'its the walls of the bore snugly so as to be supported laterally thereby. The inner end of the bore e', terminatesin an annular shoulder e2, through which opens a passage e3, of less diameter extending through the lower part of the plug C.

A perforated soft metal gasket m, is interposed between the lower end of the observa tion glass G and the annular shoulder e2 and another. unperforated soft metal gasket m', is interposed between the upper end of said 0bservation glass and the screw plug E, by which the glass and gaskets are secured in position. Lateral sight holes s, s, are formed in the sides of the extension e, through which the glass G may be inspected.

The pressure of live steam within the receptacle forces the oil through the passage c3, and into the observation glass G, where it is held until the level of the water of condensationreaches the lower' edge of the port a2,- and the lower end of the passage c2 (these two points being on the same horizontal plane as shown in Fig. 3, of the drawings) when the escape of water of condensation with the oil between the level of the water and the top of the receptacle draws off the oil from the observation glass to be replaced by live steam. This condition of affairs is readily detected by a glance through the sight holes s, s.

It will be seen that the plug C is made to perform a double function in that it closes the filling port and affords a vmeans of observation for detecting the presence or absence of oil within the receptacle. Furthermore in the construction shown the observation glass is fully isolated and protected not only from Contact with extraneous objects, but also vagainst extremes of temperature, since only a smallportion of the surface of the glass is exposed through the sight holes, the main portion of the glass being inclosed and sustained by a metallic casing which maintains it at an even temperature. The structure is also simple and compact, and suited to the requirements and conditions of use of a lubricator of the character designated, and is intended for and applicable only to a lubricator in which the oil or other lubricant is displaced by the condensation of steam within the receptacle. Hence, otherwise than as above set forth the operation is the same as heretofore set forth in our concurrent application herein previously mentioned,-the steam rising, in practice through the conduit (L, passing between the valve seat a', and the valve c, when the latter is raised, and entering the reservoir through the lateral port a2. The condensation of the steam within the receptacle A causes the water of condensation to sink to the bottoni thereof, thereby displacing a corresponding amount of oil which flows through the port a2, spreading itself over the seat a', and flowing down the sides of the passage c, in an annular stream through which the steam ascends centrally.

We have hereinbefore described the use of metallic gaskets in connection with the sight glass, but we do not confine ourselves thereto since gaskets of other substances maybe substituted with like result.

What we claim as our invention and desire to secure by Letters Patent is,

l. In a lubricator of the character designated, the combination with the lubricant receptacle having a common conduit for the inlet of steam. and the gravitating outlet of oil, of a tell-tale sight on top of thereceptaelo consisting of a glass tube and casing sealed at the outer end and. conununicating at the inner end with the interior of the reeeptzwle, for the purpose described.

2. In a lubrieator of the character desig nated, the combination. of a lubricant reeep taele having a eonnuon conduit for the inlet of steam and the gravitating outlet of oil and a tell-tale sight consisting of a screw plug 'fitted to the top of said receptael f and having a passage eo]umunieating with the interior thereof, a glass tube fitting in a bore in said plug and ciminiunicating with said passage therein, said plug being formed with sight openings exposing said glass tube in part, and means for sealing the upper end of said glass tube for the purpose described.

3. ln a lubricator of the eluiracter designated, the combination with the lubricant receptacle having a common conduit for the inlet of steam and the gravitating outlet of oil of a tell-tale sight on top of the receptacle, consisting of a screw plug fitted to the top oll said receptacle and formed with a passage. eoiumunicating with the interior thereof, a glass tube fitting in a bore formed for its reception in said plug and connuunicating with said passage therein, the plug being formed with sight openings exposing said glass tube in part, a perforated. gasket interposedbetween the lower end of said glass tube and the opposed supporting shoulder in the plug, a gasket interposed between the upper end of said glass tube and the screw by which it is secured in position, and said securing screw, for the purpose described.

WILLIAM LE Y LAN D. JOHN VM. l'ilCYliANl). Witnesses GEO. VM. Murr, D. `W. GAunNna. 

